diff options
Diffstat (limited to 'mm/kasan/common.c')
| -rw-r--r-- | mm/kasan/common.c | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 7b53291dafa1..6bb87f2acd4e 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -60,7 +60,7 @@ void kasan_disable_current(void) void __kasan_unpoison_range(const void *address, size_t size) { - kasan_unpoison(address, size); + kasan_unpoison(address, size, false); } #ifdef CONFIG_KASAN_STACK @@ -69,7 +69,7 @@ void kasan_unpoison_task_stack(struct task_struct *task) { void *base = task_stack_page(task); - kasan_unpoison(base, THREAD_SIZE); + kasan_unpoison(base, THREAD_SIZE, false); } /* Unpoison the stack for the current task beyond a watermark sp value. */ @@ -82,7 +82,7 @@ asmlinkage void kasan_unpoison_task_stack_below(const void *watermark) */ void *base = (void *)((unsigned long)watermark & ~(THREAD_SIZE - 1)); - kasan_unpoison(base, watermark - base); + kasan_unpoison(base, watermark - base, false); } #endif /* CONFIG_KASAN_STACK */ @@ -97,7 +97,7 @@ slab_flags_t __kasan_never_merge(void) return 0; } -void __kasan_alloc_pages(struct page *page, unsigned int order) +void __kasan_alloc_pages(struct page *page, unsigned int order, bool init) { u8 tag; unsigned long i; @@ -108,14 +108,14 @@ void __kasan_alloc_pages(struct page *page, unsigned int order) tag = kasan_random_tag(); for (i = 0; i < (1 << order); i++) page_kasan_tag_set(page + i, tag); - kasan_unpoison(page_address(page), PAGE_SIZE << order); + kasan_unpoison(page_address(page), PAGE_SIZE << order, init); } -void __kasan_free_pages(struct page *page, unsigned int order) +void __kasan_free_pages(struct page *page, unsigned int order, bool init) { if (likely(!PageHighMem(page))) kasan_poison(page_address(page), PAGE_SIZE << order, - KASAN_FREE_PAGE); + KASAN_FREE_PAGE, init); } /* @@ -251,18 +251,18 @@ void __kasan_poison_slab(struct page *page) for (i = 0; i < compound_nr(page); i++) page_kasan_tag_reset(page + i); kasan_poison(page_address(page), page_size(page), - KASAN_KMALLOC_REDZONE); + KASAN_KMALLOC_REDZONE, false); } void __kasan_unpoison_object_data(struct kmem_cache *cache, void *object) { - kasan_unpoison(object, cache->object_size); + kasan_unpoison(object, cache->object_size, false); } void __kasan_poison_object_data(struct kmem_cache *cache, void *object) { kasan_poison(object, round_up(cache->object_size, KASAN_GRANULE_SIZE), - KASAN_KMALLOC_REDZONE); + KASAN_KMALLOC_REDZONE, false); } /* @@ -322,8 +322,8 @@ void * __must_check __kasan_init_slab_obj(struct kmem_cache *cache, return (void *)object; } -static inline bool ____kasan_slab_free(struct kmem_cache *cache, - void *object, unsigned long ip, bool quarantine) +static inline bool ____kasan_slab_free(struct kmem_cache *cache, void *object, + unsigned long ip, bool quarantine, bool init) { u8 tag; void *tagged_object; @@ -351,7 +351,7 @@ static inline bool ____kasan_slab_free(struct kmem_cache *cache, } kasan_poison(object, round_up(cache->object_size, KASAN_GRANULE_SIZE), - KASAN_KMALLOC_FREE); + KASAN_KMALLOC_FREE, init); if ((IS_ENABLED(CONFIG_KASAN_GENERIC) && !quarantine)) return false; @@ -362,9 +362,10 @@ static inline bool ____kasan_slab_free(struct kmem_cache *cache, return kasan_quarantine_put(cache, object); } -bool __kasan_slab_free(struct kmem_cache *cache, void *object, unsigned long ip) +bool __kasan_slab_free(struct kmem_cache *cache, void *object, + unsigned long ip, bool init) { - return ____kasan_slab_free(cache, object, ip, true); + return ____kasan_slab_free(cache, object, ip, true, init); } static inline bool ____kasan_kfree_large(void *ptr, unsigned long ip) @@ -407,9 +408,9 @@ void __kasan_slab_free_mempool(void *ptr, unsigned long ip) if (unlikely(!PageSlab(page))) { if (____kasan_kfree_large(ptr, ip)) return; - kasan_poison(ptr, page_size(page), KASAN_FREE_PAGE); + kasan_poison(ptr, page_size(page), KASAN_FREE_PAGE, false); } else { - ____kasan_slab_free(page->slab_cache, ptr, ip, false); + ____kasan_slab_free(page->slab_cache, ptr, ip, false, false); } } @@ -428,7 +429,7 @@ static void set_alloc_info(struct kmem_cache *cache, void *object, } void * __must_check __kasan_slab_alloc(struct kmem_cache *cache, - void *object, gfp_t flags) + void *object, gfp_t flags, bool init) { u8 tag; void *tagged_object; @@ -453,7 +454,7 @@ void * __must_check __kasan_slab_alloc(struct kmem_cache *cache, * Unpoison the whole object. * For kmalloc() allocations, kasan_kmalloc() will do precise poisoning. */ - kasan_unpoison(tagged_object, cache->object_size); + kasan_unpoison(tagged_object, cache->object_size, init); /* Save alloc info (if possible) for non-kmalloc() allocations. */ if (kasan_stack_collection_enabled()) @@ -496,7 +497,7 @@ static inline void *____kasan_kmalloc(struct kmem_cache *cache, redzone_end = round_up((unsigned long)(object + cache->object_size), KASAN_GRANULE_SIZE); kasan_poison((void *)redzone_start, redzone_end - redzone_start, - KASAN_KMALLOC_REDZONE); + KASAN_KMALLOC_REDZONE, false); /* * Save alloc info (if possible) for kmalloc() allocations. @@ -546,7 +547,7 @@ void * __must_check __kasan_kmalloc_large(const void *ptr, size_t size, KASAN_GRANULE_SIZE); redzone_end = (unsigned long)ptr + page_size(virt_to_page(ptr)); kasan_poison((void *)redzone_start, redzone_end - redzone_start, - KASAN_PAGE_REDZONE); + KASAN_PAGE_REDZONE, false); return (void *)ptr; } @@ -563,7 +564,7 @@ void * __must_check __kasan_krealloc(const void *object, size_t size, gfp_t flag * Part of it might already have been unpoisoned, but it's unknown * how big that part is. */ - kasan_unpoison(object, size); + kasan_unpoison(object, size, false); page = virt_to_head_page(object); |